A private startup aiming to launch manned lunar expeditions has started a crowdfunding campaign to get the public involved.

The company, Golden Spike, aims to get its first mission off the ground by 2020. To help achieve that goal, the startup's leaders are reaching out via the crowdfunding site Indiegogo in hopes of raising $240,000 ­— "a dollar for every mile on the way to the moon," said Golden Spike's president and CEO, planetary scientist Alan Stern.

"Ever since we launched [the company], we've been getting emails and tweets and Facebook posts about, 'How can I help?'" Stern told SPACE.com. "It just seems like there's a hunger out there to participate in grand exploration."

Contributors during the 10-week campaign can secure rewards ranging from printed "thank you's" and subscriptions to Golden Spike's mailing list (for a $25 donation), to VIP trips to see the company's first moon launch (for a contribution of $50,000). Other options include nominating names for the lunar test vehicles, and having your name flown to the moon during Golden Spike's first lunar landing mission.

Stern said the money raised would be used to help Golden Spike get off the ground. But moreover, he added, it's a way for people excited about the idea of private moon travel to get involved, and a way to raise awareness about the venture. [How Golden Spike's Moon Landing Plan Works (Infographic)]

"We hope that this campaign and all the projects it enables will generate a degree of participation in space exploration that has never existed before," Gerry Griffin, former Apollo flight director and the chairman of Golden Spike's board of directors, said in a statement.

The missions will sell for around $1.5 billion and will be aimed at corporations, countries without their own space programs and even some wealthy individuals.

"I think people are really excited about the idea of sending human expeditions to the moon from countries all over the world," Stern said. "It could be all different kinds of people, for all different kinds of purposes. It's a very different, forward concept."

To help keep costs down, Golden Spike plans to sell branding opportunities and advertising time during live broadcasts of missions.

"We plan to make these lunar expeditions television extravaganzas, like the Olympics," Stern said. "We'll sell the advertising time like they do with the Super Bowl."

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Clara Moskowitz

Clara has been SPACE.com's Assistant Managing Editor since 2011, and has been writing for SPACE.com and LiveScience since 2008. Clara has a bachelor's degree in astronomy and physics from Wesleyan University, and a graduate certificate in science writing from the University of California, Santa Cruz. To find out what her latest project is, you can follow Clara on Google+.